Night Light of Ystalyfera (Wales) from space (United Kingdom) Src. Average luminocity for 10x10km area is 2.5% and for 50x50km: 7.6648%.
Square area 10x10 km:
 0%
 0%
 0%
 0.84%
 0.28%
 0%
 1.4%
 0.28%
 1.54%
 0.98%
 94.68%Square area 50x50 km:
 0.84%
 1.1%
 0.57%
 0.95%
 1.08%
 1%
 1.1%
 1.29%
 2.92%
 6.53%
 82.63%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
52° 12' 0.7" North, 4° 29' 2.2" West
51° 46' 1.8" North, 3° 46' 51" West
51° 19' 47.7" North, 3° 4' 39.7" West
Some cities around Ystalyfera sort by population:
• Neath
		11.7 km =7.3 mi, 
188°
• Briton Ferry
		15.4 km =9.6 mi, 
189°
• Ammanford
		14.6 km =9.1 mi, 
281°
• Clydach
		12.4 km =7.7 mi, 
221°
• Pontarddulais
		18.7 km =11.6 mi, 
251°
• Brynamman
		6.9 km =4.3 mi, 
301°
• Glyn-neath
		11.4 km =7.1 mi, 
101°
• Cwmafan
		16.8 km =10.4 mi, 
175°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016